A random sample has been taken from a normal distribution and the following confidence intervals constructed using
Question:
A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (38.02, 61.98) and (39.95, 60.05)
(a) What is the value of the sample mean?
(b) One of these intervals is a 95% CI and the other is a 90% CI. Which one is the 95% CI and why?
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a Sample mean from the first confidence interval ...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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